APPBROWSER-359: Sync tensor in GC benchmark tests

Change-Id: I22c1aa92e70d6143bbcec90e9e7de9f1ce1c1e55
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/114635
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
diff --git a/src/core/GLES_COMPUTE/kernels/GCGEMMMatrixMultiplyKernel.cpp b/src/core/GLES_COMPUTE/kernels/GCGEMMMatrixMultiplyKernel.cpp
index 8179525..baf1a9b 100644
--- a/src/core/GLES_COMPUTE/kernels/GCGEMMMatrixMultiplyKernel.cpp
+++ b/src/core/GLES_COMPUTE/kernels/GCGEMMMatrixMultiplyKernel.cpp
@@ -40,6 +40,7 @@
 #include <string>
 
 using namespace arm_compute;
+using namespace arm_compute::gles_compute;
 
 GCGEMMMatrixMultiplyKernel::GCGEMMMatrixMultiplyKernel()
     : _input0(nullptr), _input1(nullptr), _output(nullptr)